2015
DOI: 10.1049/iet-pel.2014.0593
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Reactive current injection protocol for low‐power rating distributed generation sources under voltage sags

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Cited by 25 publications
(39 citation statements)
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“…The maximum current amplitude appears in the phase with lowest voltage amplitude (purple trace in Figure 11). This last effect is very interesting for voltage support purposes, it maximizes the support in the most perturbed phase [14]. As stated before, at t = 0.125 s RCI starts.…”
Section: Resultsmentioning
confidence: 72%
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“…The maximum current amplitude appears in the phase with lowest voltage amplitude (purple trace in Figure 11). This last effect is very interesting for voltage support purposes, it maximizes the support in the most perturbed phase [14]. As stated before, at t = 0.125 s RCI starts.…”
Section: Resultsmentioning
confidence: 72%
“…When calculated locally, Q* is determined to fulfil the stringent reactive current injection (RCI) requirements set by grid codes during voltage disturbances [12]. RCI can also be used with the aim of supporting the grid voltage when the grid impedance is mainly inductive [13,14]. The reactive power reference for each node can also be determined by a centralized controller when a general voltage control is required [56,57].…”
Section: Network-forming Controllermentioning
confidence: 99%
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“…A closed-loop voltage control scheme is proposed in [15] where online values for the reactive power and the control parameter are provided, although limited to some specific voltage sags. For proper operation under any type of voltage sag, the authors in [16] and [17] proposed two improved reactive power/current injection schemes for high-power and low-power rating DG sources, respectively. However, all of the schemes designed in [15]- [17] need to be integrated with the grid impedance and to assume the knowledge of its value, even if it is actually variable related to the fault position and requires an extra grid impedance estimator.…”
Section: Introductionmentioning
confidence: 99%
“…For proper operation under any type of voltage sag, the authors in [16] and [17] proposed two improved reactive power/current injection schemes for high-power and low-power rating DG sources, respectively. However, all of the schemes designed in [15]- [17] need to be integrated with the grid impedance and to assume the knowledge of its value, even if it is actually variable related to the fault position and requires an extra grid impedance estimator. To avoid such limitations and to keep the injected currents within safety limits during unbalanced voltage sags, several remarkable control strategies have been developed in [18]- [20].…”
Section: Introductionmentioning
confidence: 99%